Endangered Languages Catalogue Project. Compiled by research teams at University of Hawai'i Mānoa and Institute for Language Information and Technology (LINGUIST List) at Eastern Michigan University . (2012) ·

East and Southeast Asia ( pp. 349-424 ) . David Bradley (2007) · In Encyclopedia of the World's Endangered Languages edited by C. Moseley · London & New York: Routledge

LL-MAP (Language and Location: A Map Accessibility Project) . Anthony Aristar and Helen Aristar-Dry and Yichun Xie (2012) · http://llmap.org

Bai Dialect Survey . Bryan Allen (2007) · SIL Electronic Survey Reports. 2007-012 http://www.sil.org/silesr/abstract.asp?ref=2007-012